/*
 *  Copyright 2001-2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package ar.uba.fi.posgrado.common.web.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import ar.uba.fi.posgrado.common.model.User;
import ar.uba.fi.posgrado.common.service.UserService;
import ar.uba.fi.posgrado.common.web.form.UserForm;

/**
 * Lista todos los usuarios.<br>
 * 
 * @author nicolas.gonzalez
 */
public class ListUsersAction extends Action {

    /** Logger */
    private static Logger logger = Logger.getLogger(ListUsersAction.class);      
    
    private UserService userService;

    /**
     * @param userService the userService to set
     */
    public void setUserService(UserService userService) {
        this.userService = userService;
    }

    
    /**
     * @see org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if (logger.isDebugEnabled()) {
            logger.debug("Por listar usuarios ...");
        }
        UserForm form = (UserForm)actionForm;

        List<User> users = userService.getAllUsers();
        /* Nombre de usuario loggeado, o sea, uno mismo.
         * Es para no ponerlo en el listado de los usuarios, ya q un usuario
         * no puede modificarse a si mismo ni eliminarse!!!! */
        String userName = request.getUserPrincipal().getName();
        User user = this.userService.getUserByName(userName);
        users.remove(user);
        // Todos los usuarios menos uno mismo
        form.setUsers(users);
        
        logger.info("Listar usuarios finalizado");
        return mapping.findForward("success");
    }
    
    
}
